/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *  
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.wl4g.dopaas.uds.example.zookeeper;

import java.io.File;
import java.io.IOException;

import org.apache.curator.test.TestingServer;

/**
 * Embed ZooKeeper.
 * 
 * <p>
 * Only used for examples
 * </p>
 */
public final class EmbedZookeeperServer {

	private static TestingServer testingServer;

	/**
	 * Embed ZooKeeper.
	 * 
	 * @param port
	 *            ZooKeeper port
	 */
	public static void start(final int port) {
		try {
			testingServer = new TestingServer(port, new File(String.format("target/test_zk_data/%s/", System.nanoTime())));
		} catch (final Exception ex) {
			ex.printStackTrace();
		} finally {
			Runtime.getRuntime().addShutdownHook(new Thread(() -> {
				try {
					Thread.sleep(1000L);
					testingServer.close();
				} catch (final InterruptedException | IOException ignore) {
				}
			}));
		}
	}

}
